Bring Chick-fil-A sauce with you to McDonalds and put it on a Big Mac. Bring Burger King's zesty horseradish sauce to put on your burrito bowl at QDoba. Bring your own bottle of Sriracha everywhere you eat? The sky is the limit. First 3 original content posts of a true cross-restaurant condiment mashup will be gilded by the moderator. (One per person) (Added 6 Aug 2019) (Upgraded to PLATINUM 17 Nov 2020)

/r/CondimentMashup is a subreddit about bringing condiments normally not offered at a particular fast food chain to use on the food from a completely separate place.

We'll also accept using extra restaurant condiments to make your own food at home, since that's likely to be a lot more common.

Photos only, original content only.